Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given 3 required parameters, 0% schema coverage, no output schema, and no annotations, the description is severely incomplete. It lacks details on return value, error conditions, and behavior beyond a vague 'Set'. For a mutation tool, this is insufficient for correct invocation.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.